Commissioning and running of sPHENIX

[Stefan Bathe <stefan.bathe AT baruch.cuny.edu>]

Minutes shift change 2023-05-16

general
—————
approval
- Mike Clancy approved
- as of yesterday evening on BHSO’s desk
- Kin:  BHSO asked for OPC for sweep, satisfied

- Kin:  Nitrogen dewar:  non-insulating valve:  cryo group working on fixing 
it
- Kin:  use only BNL tags

access:
- STAR repair finished early, MCR just asked for sweep at sPHENIX
- tomorrow 8am - 6pm—but sweep sPHENIX earlier

evening (Raghav)
- smooth
- testing beam
- losing yellow a few times

night (Brett)
- leak behind INTT chiller -> Rachid: fixed flow meter
- HCal trip

Day (Ben)
- MCR access IR for sweep training
- 1:30pm. all of TPC rack mysteriously turned off—>talked to Lee
  - reason unclear
  - experts turned racks back on
  —> follow up with Joel
  - whole panel

MBD (Abdul)
- modified HV GUI
- uploaded HV GUI to DO station
- access to fix some FEM couple

HCAL (Virginia)
- yesterday morning 9 HV channels tripped
- this morning 3 of those tripped again
- reason unclear

EMCal (Sean)
- essentially entire detector functioning
- DAQ development with Martin

TPOT (Hugo)
- nothing except for rack 

TPC (Takao)
- investigating additional noise in particular sectors
- measures impedance:  that’s not it
- unplugged cables at power supply:  no difference w/ and w/o connection
- can live with noise, just have to adjust threshold

INTT (Rachid)
- replaced flow meter in chiller (fixed leak)
- turned on bias and LV
- Raul, Itaru, Genki working to move INTT to big partition
- Joseph working on online monitoring based on 
- INTT LV off
- turn INTT LV and bias off if beam injected

MVTX (Jo)
- working on configuration of CAEN system
  - breaker was installed yesterday, functional
- Yasser:  seeing algae in stave cooling water accumulating on top of flow 
meter, investigating
  —> analyze
- Martin:  CAEN-bus module:  update firmware

sEPD nothing

DAQ (Martin)
- reading out GL1
- added INTT
- tomorrow will add EMCal

Trigger (Dan)
- plug in for LL1 completed, decoder is as well
- MBD trigger ready
- calorimeter trigger under development

ZDC (John)
- saw collisions, hmm
- need SEB machine:  Marting



- 
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Stefan Bathe
Professor of Physics
Baruch College, CUNY
and RIKEN Visiting Scientist

Baruch:                                     BNL:
17 Lexington Ave                      Bldg. 510
office 940                                  office 2-229
phone 646-660-6272                phone 631-344-8490
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